Wire-drawing machine



(No Model.)

, G. F. EVANS.

WIRE DRAWING MACHINE.

No. 448,215. Patented Mar. 17, 18191.

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iran STATES PATENT Grinch,

GEORGE FRANK EVANS, OF SOMERVILLE, MASSACHUSETTS.

WIRE-DRAwlNG MACHINE.

SPECIFICATION forming part of Letters Patent No.2448,215, dated March 17, 1891. Application led September 3, 1890. Serial No. 363,821. (No model.)

To all whom t may concern,.-

Be it known that 1, GEORGE FRANK EVANS, a citizen of the United States, residing at Somerville, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in IVire-Drawing Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the figures of reference marked thereon, which form a part of this specification.

This invention relates to improvements in wired rawin g machines, in which acontinuous length of wire is successively passed through a series of dies, which gradually reduce it until the proper size is produced.

My improvements relate particularly to the mechanism by which variable motion is imparted to the wire-drawing drums or cylinders about which the wire is passed in order to pull it through the die with which it cooperates. This mechanism, more fully hereinafter described, enables the speed of each wire-drawing drum to be regulated just as may be desired and while the machine is in motion-an important and desirable feature.

The drawings represent in Figure l a plan of a wire-drawing machine embodying my improvements. Fig. 2 is a side elevation, much enlarged, of the mechanism for varying the speed of the wire-drawin g drums. Fig. 3 is a transverse section of the machine, showing this same mechanism enlarged.

In Fig. l the general features of a wiredrawing machine of the class above premised are represented as follows: 2 is the frame of the machine, upon which the various co-operating parts are mounted. These parts consist, primarily, of a main driving-shaft 3, with fast and loose pulleys. This shaft extends longitudinally of the machine-frame, and is provided with a series of cone-pulleys et 42 43 44. Inparallelism with the main shaft are arranged a series of counter-shafts 5 52 53 54. The latter, furnished with a series of conepulleys 6 62 63 64, are positioned reversely 0f those on the main shaft and to correspond with the position of said driving-pulleys.

Loosely encircling each driven pulley 6', &C.,is placed an endless band l7, which is adapted to pass between and be gripped bythe pair of reversely-position ed con e-pulleys 4 6 42 62,which are non-contiguous. Thus each driven pulley and its counter-shaft may be adjusted in its rotation independently of any other but corresponding counter-shaft. This is effectedv bv shifting the position of the belt endWise of the driving-pulley by mechanism not here shown, sinceit is immaterial to my present invention. However, such mechanism is fully described in Letters Patent issued in my name on the 6th day of December,l887, and numbered 374,296.

Along the front side of the machine are grouped the reducing-dies 7 7 72, (shown as fixed to the machine-frame,) and between them are arranged a series of wire-drawing drums 8 82 S3, about which the wire is given one or more turns. Each die has a co-operating drum, and the entire series is in longitudinal adjustment, so that the wire 20 shall move in a proper and continuous direction in its passage through the machine. To operate these drums and regulate their movements according to the dnctility or other variable conditions which occasion faster or slower rates of travel in the wire, and to enable such adjustments to be effected while the machine is at work, I have mounted each Wire-drawing drum on short shafts 9 92 93 transversely of the machine. The several drums are attached to the front projecting ends of their respective shafts, while at the rear end portion of said shafts are affixed worm-gears 10 102 103, aligned above the counter-shafts 5 52 52,which are here equipped With worms 12 122 123, the latter engaging with their respective gears, whereby the variable adjustable speed of the counter-shafts is transmitted to the wire-drawing drums. Consequently, the movement of the latter are regulated individually, as the conditions or circumstances require.

1. In a wire-drawing machine, the combination,with a series of driving con e-pulleys revolving at uniform speed and a series of driven cone-pulleys at varying speed, of a series of Wire-drawing drums, their transverse shafts,

and the series of worin-gears and worms Which interconnect each shaft of the driven pulley with the shaft of the Wire-drawing drums, substantiallyas and for the purposes specified.

2. The eombination,with a prime motor, a main shaft, a series of cone-pulleys thereupon having uniform speed, a series of wire-drawing drums, and their actuating-shafts, with variable speed, of a series of cone-pulleys on their respective counter-shafts, also at variable speed, the endless band gripped between the two sets of cone-pulleys, and a Worm-gea r and Worms which interconnect the shafts of the Wire-drawing drums and the driven conepulleys, substantially as described.

8. In combination with a seriesof fixed reducing-dies, a series of wire-drawing drums at variable speed, their independent shafts provided with worin gears, the respective counter-shafts furnished with a Worm and a driven cone-pulley, and the main shaft with the series of driving-cone pulleys which actuate the driven cones by a loose endless band which passes between each pair of pulleys, substantially as stated.

4. In a wire-drawing machine, a series of fixed reducing-dies, the series of transverse shafts at variable speed equipped with a wiredrawing drum, a series of counter-shafts furnished with driven cone-pulleys, and a main shaft having a series of reversely-positioned driving cone-pulleys, combined with a woringear, a Worm, and a loose endless band, the worin-gear and Worin engaging to interconneet the shafts of the Wire-drawing drums With those of the driven oone-pulleys,\vhile the endless band adjustable endwise between the two sets of cones serves to operate the driven set and imparts variable speed thereto, substantially as specified and set forth.

In testimony whereof I affix my signature in presence of two witnesses.

GEORGE FRANK EVANS.l

lVitnesses:

H. E. LODGE, HENRY A. SMITH. 

